Patents by Inventor Eric Perraud

Eric Perraud has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5409999
    Abstract: Thermoplastic powder coating compositions including a polyamide and/or polyetheresteramide constituent and an epoxy/sulfonamide resin constituent are well adapted for coating a wide variety of metal substrates, e.g., by electrostatic spraying, without the requirement for first treating such substrates with an adhesion primer.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: April 25, 1995
    Assignee: Elf Atochem S.A.
    Inventors: Jean-Paul Merval, Eric Perraud, Stephen Rennie
  • Patent number: 5408091
    Abstract: A device for measuring a physical quantity by time-division coding includes a source (1) capable of generating light pulses; a coder (2), the position of which depends on the value of the physical quantity, a sensor (4) including apparatus (5) for sending the light pulses to the coder (2) and a receiver (6) for receiving the coded light pulses, and an analyzer (7) for analyzing the coded light pulses connected to the sensor. The source (1) is capable of generating light pulses simultaneously at two different wavelengths (.lambda.1, .lambda.2), and the sensor (4) is provided with apparatus (9a) for separating the light pulses on the basis of their wavelength, the light pulses at a first wavelength (.lambda.1) passing through the sensor (4) and being coded, while the light pulses at a second wavelength (.lambda.2) are returned to the analyzer (7) to constitute pulses for triggering the sensor.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: April 18, 1995
    Assignee: Societe Anonyme dite: Aerospatiale Societe Nationale Industrielle
    Inventors: Eric Perraud, Jean-Paul Domergue, Stephane Roulon